Sealing arrangement

F - Mech Eng,Light,Heat,Weapons – 16 – J

Patent

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Details

F16J 15/00 (2006.01) F16J 15/40 (2006.01) F16J 15/54 (2006.01)

Patent

CA 2649344

A sealing arrangement for the sealed leadthrough of rotating shafts (2) through housing bores of housings (1) comprises at least one lip seal (3, 8, 14, 15) with a sealing lip which faces toward the region with normally higher pressure. In order to significantly widen the field of use of sealing arrangements with lip seals, and to thereby obtain, even in the event of relatively high pressures and pressure fluctuations, the advantages of said sealing arrangements with lip seals with regard to greater economic viability, better durability even in the event of pressure peaks, simpler installation and simpler servicing, the lip seal (3, 8, 14, 15) is acted on, on the side (5) which faces toward the region with the higher pressure, with a constant pressure which is higher than the highest pressure occurring within the housing (1), and a gap (7, 10) which throttles the outflow is provided between said region and the housing interior.

L'invention concerne un agencement d'étanchéité pour le passage étanche d'arbres en rotation (2) à travers des alésages de boîtiers (1), qui comprend au moins un joint d'étanchéité à lèvre (3, 8, 14, 15) avec une lèvre d'étanchéité qui est tournée vers la partie ayant normalement la pression la plus élevée. Afin d'élargir considérablement la plage d'utilisation des agencements d'étanchéité avec des joints d'étanchéité à lèvres et donc également d'obtenir, dans le cas de fortes pressions et de fortes variations de pression, leurs avantages en termes de plus grand rendement, de meilleure durabilité, même en cas de pointes de pression, et de montage et d'entretien plus faciles, le joint d'étanchéité à lèvre (3, 8, 14, 15) est sollicité du côté (5) tourné vers la plage de pression plus élevée avec une pression constante qui est supérieure à la pression maximale se produisant à l'intérieur du boîtier (1), et une fente (7, 10) étranglant le flux de sortie est pratiquée entre cette région et l'intérieur du boîtier (1).

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